<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<script src="https://unpkg.com/vue@next"></script>
<div id="app">
    <ul>
        <li v-for="(item, index) of items">{{item.message + index}}</li>
    </ul>

</div>
<script>
    const vueOpt = {
        data(){
            return {
                items: [{message: 'hello'}, {message: 'world'}]
            }
        }
    }

    Vue.createApp(vueOpt).mount('#app')
</script>
</body>
</html>